失效时长和结构延性对基础隔震结构连续倒塌影响分析
|
摘要
利用SAP2000有限元软件建立了一个4层基础隔震框架结构,利用非线性动力分析方法,主要从构件不同失效时长和延性角度分析了基础隔震结构在地震作用下的抗连续倒塌能力。研究结果表明:拆柱后,剩余结构在地震作用下对构件失效时长比较敏感,且随着失效时长的增加,梁端塑性铰转角和失效点竖向最大位移都有所减小;随着梁截面高度的增加,梁端最大塑性铰转角有所减小,抗连续倒塌能力有所提高。
A four story base isolated structure is built using the structural finite element analysis software SAP2000. The capability of resisting progressive collapse of a isolated structure is studied with the non-linear dynamics method after the change of beam height and failure duration of elements. The studies shows that: the left structure is sensitive to the failure duration of elements,after the failure duration of elements increased,the plastic rotation and the displacement of the failure node are both decreased; with the increase of beam height,the plastic rotation is decreased,and the capability of resisting progressive collapse is improved.
A four story base isolated structure is built using the structural finite element analysis software SAP2000. The capability of resisting progressive collapse of a isolated structure is studied with the non-linear dynamics method after the change of beam height and failure duration of elements. The studies shows that: the left structure is sensitive to the failure duration of elements,after the failure duration of elements increased,the plastic rotation and the displacement of the failure node are both decreased; with the increase of beam height,the plastic rotation is decreased,and the capability of resisting progressive collapse is improved.
引文
[1]Ellingwood Bruce R.Mitigating Risk from Abnormal Loads and Progressive Collapse[J].Journal of Performance of Constructed Facilities,2006,20(4):315~323
[2]UFC.Design of Buildings to Resist Progressive Collapse[R].Washington,2005
[3]马人乐,陈俊岭,何敏娟.建筑结构二次防御能力分析方法[J].同济大学学报(自然科学版),2006,34(5):Ma Ren-le,Chen Jun-ling,He Min-juan.Analytical Method of Alternative Defensive Ability for Building Structures[J].Journal of Tongji University(Natural Science Edition),2006,34(5):(in Chinese)
[4]GB 50010-2010,混凝土结构设计规范[S]GB 50010-2010,Code for Deign of Concrete Structures[S](in Chinese)
[5]易伟建,何庆锋,肖岩,钢筋混凝土框架结构抗倒塌性能的试验研究[J].建筑结构学报,2007,2(5):104~109Yi Wei-jian,He Qing-feng,Xiao Yan.Collapse Performance of RC Frame Structure[J].Journal of Building Structures,2007,2(5):104~109(in Chinese)
[6]陆新征,林旭川,叶列平,等.地震下高层建筑连续倒塌数值模型研究[J].工程力学,2010,27(11):64~70Lu Xin-zheng,Lin Xu-chuan,Ye Lie-ping.Numerical Models for Earthquake Induced Progressive Collapse of High Rise Building[J].Engineering Mechanics,2010,27(11):64~70(in Chinese)
[7]梁益,陆新征,李易,等.三层RC框架的抗连续倒塌设计[J].解放军理工大学学报(自然科学版),2007,8(6):659~664Liang Yi,Lu Xin-zheng,Li Yi.Design Method to Resist Progressive Collapse for A Three Story RC Frame[J].Journal of PLA University of Science and Technology(Natural Science Edition),2007,8(6):659~664(in Chinese)
[8]陆新征,李易,叶列平.混凝土结构防连续倒塌理论与设计方法研究[M].北京:中国建筑工业出版社,2011Lu Xin-zheng,Li Yi,Ye Lie-ping.Theory and Design Method for Progressive Collapse Prevention of Concrete Structures[M].Beijing:China Architecture&Building Press,2011(in Chinese)
[9]Lu Xiao,Lu Xin-zheng,Zhang Wan-kai,et al.Collapse Simulation of A Super high-rise Building Subjected to Extremely Strong Earthquakes[J].China Technological Sciences,2011,54(10):2549~2560
[10]Lu Xiao,Lu Xin-zheng,Guan Hong,et al.Collapse Simulation of Reinforced Concrete High-rise Building Induced by Extreme Earthquakes[J].Earthquake Engineering&Structural Dynamics,2013,42(5):705~723
[11]杨迪雄,李刚,程耿东.近断层脉冲型地震动作用下隔震结构地震反应分析[J].地震工程与工程振动,2005,25(2):119~124Yang Di-xiong,Li Gang,Cheng Geng-dong.Seismic Analysis of Base-isolated Structures Subjected to Nearfault Pause-like Ground Motions[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(2):119~124(in Chinese)
[12]Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major Modernization Project[S].U.S.General Service Administration,2003
[13]杜振辉.框架结构抗连续倒塌设计与延性分析[D].大连:大连理工大学,2008Du Zhen-hui.Progressive Collapse Design and Ductile Analysis for Frame Structures[D].Dalian:Dalian University of Teehnology,2008(in Chinese)
[14]赵国藩.高等钢筋混凝土结构学[M].北京:中国电力出版社,1996Zhao Guo-fan.Advanced Reinforced Concrete Structures.Beijing:China Electric Power Press,1996(in Chinese)
[2]UFC.Design of Buildings to Resist Progressive Collapse[R].Washington,2005
[3]马人乐,陈俊岭,何敏娟.建筑结构二次防御能力分析方法[J].同济大学学报(自然科学版),2006,34(5):Ma Ren-le,Chen Jun-ling,He Min-juan.Analytical Method of Alternative Defensive Ability for Building Structures[J].Journal of Tongji University(Natural Science Edition),2006,34(5):(in Chinese)
[4]GB 50010-2010,混凝土结构设计规范[S]GB 50010-2010,Code for Deign of Concrete Structures[S](in Chinese)
[5]易伟建,何庆锋,肖岩,钢筋混凝土框架结构抗倒塌性能的试验研究[J].建筑结构学报,2007,2(5):104~109Yi Wei-jian,He Qing-feng,Xiao Yan.Collapse Performance of RC Frame Structure[J].Journal of Building Structures,2007,2(5):104~109(in Chinese)
[6]陆新征,林旭川,叶列平,等.地震下高层建筑连续倒塌数值模型研究[J].工程力学,2010,27(11):64~70Lu Xin-zheng,Lin Xu-chuan,Ye Lie-ping.Numerical Models for Earthquake Induced Progressive Collapse of High Rise Building[J].Engineering Mechanics,2010,27(11):64~70(in Chinese)
[7]梁益,陆新征,李易,等.三层RC框架的抗连续倒塌设计[J].解放军理工大学学报(自然科学版),2007,8(6):659~664Liang Yi,Lu Xin-zheng,Li Yi.Design Method to Resist Progressive Collapse for A Three Story RC Frame[J].Journal of PLA University of Science and Technology(Natural Science Edition),2007,8(6):659~664(in Chinese)
[8]陆新征,李易,叶列平.混凝土结构防连续倒塌理论与设计方法研究[M].北京:中国建筑工业出版社,2011Lu Xin-zheng,Li Yi,Ye Lie-ping.Theory and Design Method for Progressive Collapse Prevention of Concrete Structures[M].Beijing:China Architecture&Building Press,2011(in Chinese)
[9]Lu Xiao,Lu Xin-zheng,Zhang Wan-kai,et al.Collapse Simulation of A Super high-rise Building Subjected to Extremely Strong Earthquakes[J].China Technological Sciences,2011,54(10):2549~2560
[10]Lu Xiao,Lu Xin-zheng,Guan Hong,et al.Collapse Simulation of Reinforced Concrete High-rise Building Induced by Extreme Earthquakes[J].Earthquake Engineering&Structural Dynamics,2013,42(5):705~723
[11]杨迪雄,李刚,程耿东.近断层脉冲型地震动作用下隔震结构地震反应分析[J].地震工程与工程振动,2005,25(2):119~124Yang Di-xiong,Li Gang,Cheng Geng-dong.Seismic Analysis of Base-isolated Structures Subjected to Nearfault Pause-like Ground Motions[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(2):119~124(in Chinese)
[12]Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major Modernization Project[S].U.S.General Service Administration,2003
[13]杜振辉.框架结构抗连续倒塌设计与延性分析[D].大连:大连理工大学,2008Du Zhen-hui.Progressive Collapse Design and Ductile Analysis for Frame Structures[D].Dalian:Dalian University of Teehnology,2008(in Chinese)
[14]赵国藩.高等钢筋混凝土结构学[M].北京:中国电力出版社,1996Zhao Guo-fan.Advanced Reinforced Concrete Structures.Beijing:China Electric Power Press,1996(in Chinese)